Linux Troubleshooting and Diagnostics Questions

In depth troubleshooting and diagnostic techniques for complex Linux issues at the system and kernel level. Includes advanced use of strace, ltrace, perf, ftrace, and reading proc and sys filesystems, root cause analysis of memory leaks and resource exhaustion, diagnosing intermittent failures and I O bottlenecks, log analysis, service debugging, containerized environment troubleshooting, and strategies for progressive isolation, replication, and remediation of production incidents. Senior level expectations include understanding kernel interactions, tracing user space to kernel transitions, and designing observability approaches to prevent recurrence.